Port St. Joe, Florida, March 17, 2020 -- Han Tang Technologies, Inc. (OTC PINK: HTTI) announced today it has closed a stock exchange agreement to buy 100% of the outstanding common shares of R Squared Technologies, Inc., (“R2”), a technology company that has developed the SENTINELTM a man portable communication network between wired and Wi-Fi enabled devices to operate within a secure network. It can be used for both defense and emergency management applications. The SENTINELTM provides an...